Looking For Design Patterns

I am looking for design patterns(Singleton,Mediator,Observer,Factory,Provider etc). The main problem is, in the internet content:

Sites are teaching the patterns logic but not the cases. Learning pattern is important but using them conveniently(When and which case) is more important. I am asking for the useful content which indicates the use cases of the patterns and detailed information about designing the architecture. Maybe we can get useful content from this topic for everyone.

Useful contents will be appreciated

Thanks